horen
2 photos tagged horen, from 2 members of Flickr Commons.
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Related tags
Tags that often appear on the same photos:
- brussels
- reflection
- history
- monument
- netherlands
- hoorn
- belgium
- bruxelles
- libraryofcongress
- independence
- egmont
- execution
- xmlns:dc=httppurlorgdcelements11
- dc:identifier=httphdllocgovlocpnpppmsc05660
- light
- licht
- technology
- blind
- optical
- inventions
- 1912
- engineer
- hear
- invention
Members using this tag
Photos
Photos tagged horen:
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Recent uploads
The last upload was December 2009.
Apparaat maakt licht hoorbaar voor blinden / Blind man hearing light from Nationaal Archief uploaded December 2009
[Count Egmont and Horen (i.e, Hoorn), Monument, Brussels, Belgium] (LOC) from The Library of Congress uploaded September 2009
Conversations
Here’s a selection of the conversations happening on these photos:
[Count Egmont and Horen (i.e, Hoorn), Monument, Brussels, Belgium] (LOC)
- pennylrichardsca (now at ipernity) said:
Apparaat maakt licht hoorbaar voor blinden / Blind man hearing light
from Nationaal Archief
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pennylrichardsca (now at ipernity) said:
Hi, I'm an admin for a group called Disability History, and we'd love to have this added to the group!
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pennylrichardsca (now at ipernity) said:
The man is holding an "Exploring Optophone," invented by physicist E. E. Fournier d'Albe (1868-1933) and first exhibited in 1912 at the Optical Convention, South Kensington. It used a selenium detector to control a sound output. D'Albe went on to invent a "Reading Optophone," which attempted to convert text into sound. See Michael Capp and Phil Picton, "The Optophone: An Electronic Blind Aid," Engineering Science and Education Journal (June 2000): 137-143.